Chennai-based pharma firm Orchid Chemicals & Pharmaceuticals Ltd has temporality closed down its Cephalosporin API manufacturing facility located in Alathur, Chennai. The company was issued a closure notice by the Tamil Nadu Pollution Control Board (TNPCB) citing non-compliance with regard to the disposal of solid waste. "The Company is in active dialogue with the TNPCB officials and is confident of resolving the issues and bringing the plant to a fully operational stage at the earliest," a company spokesperson told ET. The facility has a capacity of 800 tonnes per annum.